Bump go.opentelemetry.io/proto/otlp from 0.19.0 to 0.20.0 (#63)

Bumps [go.opentelemetry.io/proto/otlp](https://github.com/open-telemetry/opentelemetry-proto-go) from 0.19.0 to 0.20.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-proto-go/releases)
- [Commits](open-telemetry/opentelemetry-proto-go@v0.19.0...v0.20.0)

---
updated-dependencies:
- dependency-name: go.opentelemetry.io/proto/otlp
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -8,21 +8,24 @@ require (
 	go.opentelemetry.io/otel v1.16.0
 	go.opentelemetry.io/otel/sdk v1.16.0
 	go.opentelemetry.io/otel/trace v1.16.0
-	go.opentelemetry.io/proto/otlp v0.19.0
+	go.opentelemetry.io/proto/otlp v0.20.0
 	google.golang.org/grpc v1.55.0
 )
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.7.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 // indirect
+	github.com/kr/text v0.2.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rogpeppe/go-internal v1.10.0 // indirect
 	go.opentelemetry.io/otel/metric v1.16.0 // indirect
-	golang.org/x/net v0.8.0 // indirect
+	golang.org/x/net v0.10.0 // indirect
 	golang.org/x/sys v0.8.0 // indirect
-	golang.org/x/text v0.8.0 // indirect
-	google.golang.org/genproto v0.0.0-20230306155012-7f2fa6fef1f4 // indirect
+	golang.org/x/text v0.9.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20230530153820-e85fd2cbaebc // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230530153820-e85fd2cbaebc // indirect
 	google.golang.org/protobuf v1.30.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )